What do you do if you are in trouble on a lonely island? Surely you need to find a way to get in touch with the outside world. Your best chance of doing this is to draw the attention of a passing plane. Body signals Pilots from different countries understand body signals if they have the correct training, When you wave your arms up and down in a straight line, it means, "yes". When you point downwards and swing your arm from side to side, it means "no". If you want the pilot to know that it's safe to land, push your hands out in front of you and bend your knees. If you want to say that it's not safe to land, put your arms in the air and move them to one side. Smoke signals The smoke from a fire can be seen from far away, so it's a good way to draw attention. If the weather is dry, it isn't hard to start a fire. Remember, however, that fires can be very dangerous if they get out of control. Never light a tire unless you're sure that it can't spread. If the ground is dark, light smoke can be seen more easily. Green grass and leaves produce light smoke. Ground-to-air signals It's a good idea lo build some signals, too. Use large pieces of wood to make the symbols  . If you can't find any wood, use earth. Some useful symbols are: F "I need food and water" II "I need medicine." I "I am badly hurt." X "I am unable lo move from here." Pilots' replies If the pilot lowers the plane's wings from side to side, this means: "message received and understood" (At night, the pilot flashes the plane's green lights.) If the pilot flies the plane in a clockwise circle, this means "message received hut not understood" (At night, the: pilot flashes the plants red lights.) However, there is no signal which means "message not received. What is the passage mainly about? A) the explanation of body signals on an island. B) The importance of making signals on an island. C) Ways of living on a lonely island. D) Ways of sending out signals on a lonely island.
D
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The street food stands are very popular in Korea . They take their name from the two kinds of hot foods they sell : Dukbokgi and Odeng . Dukbokgi is a spicy hot food made of rice cakes and some vegetables . These rice cakes are finger-shaped . They are white , and they are about ten centimeters in length . They are mixed with sliced vegetables in a pan with a spicy red dressing . Fifteen minutes later , they are ready to eat . Odeng is made of ground fish . It comes in many shapes : some are square , others are round , and still others are stick style . You can buy big or small ones . At these food stands , you can also eat Odeng , which has been boiled in a pot . It is served on a long stick so can eat it easily . The food sold at these stands is not expensive , compared to what other foods in Korea cost . Each Dukbokgi and Odeng costs about twenty to fifty cents , depending on the owner . Each food stand has its own recipes for its food ; for example , some like to add sugar or other special ingredients in the food . Usually , there is just one owner , but if the food stand is big , there may be two or three owners . When I was an elementary school student , I used to stop at street food stands every day after school to eat street food because I like it so much . What are the ingredients of the Dukbokgi ? A) Rice , fish and some vegetables B) Chicken and sugar C) Hamburgers and carrots D) Rice cakes and some vegetables
D
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"Life is speeding up. Everyone is getting unwell." This may sound like something someone would say today. But in fact, an unknown person who lived in Rome in AD  53 wrote it. We all love new inventions. They are exciting, amazing and can even change our lives. But have all these developments really improved the quality of our lives? Picture this. You're rushing to finish your homework on the computer. Your mobile phone rings, a QQ message from your friend appears on the screen, the noise from the television is getting louder and louder. Suddenly the computer goes blank and you lose all your work. Now you have to stay up all night to get it done. How happy do you feel? Inventions have speeded up our lives so much that they often leave up feeling stressed and tired. Why do you think people who live far away from noisy cities, who have no telephones, no cars, not even any electricity  often seem to be happier? Perhaps because they live simpler lives. One family in the UK went "back in time" to see what life was like without all the inventions we have today. The grandparents, with their daughter, and grandsons Benjamin, 10 and Thomas, 7, spent nine weeks in a 1940s house. They had no washing machine, microwave , computer or mobile phones. The grandmother, Lyn, said, "The more things you have, the more difficult life becomes." The boys said they fought less. Probably, they said, because there was less to fight over, such as their computer. Benjamin also noticed that his grandmother had changed from being a "trendy , beer-drinking granny", to one who cooked things. In the passage the writer describes a picture to show that new inventions   _  . A) have speeded up our lives B) have improved the quality of our lives C) may make people feel very happy D) may bring people some trouble
D
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On a hot summer day, ice-cold watermelons serve up a delicious treat. Sure, the rosy flesh   quenches your thirst  . But now there are more reasons than ever for people to reach for a slice of watermelon. Meet Dr Alison Edwards. She is a scientist at the Agricultural Research Service. Scientists are people who come up with new ideas called theories  . They usually do scientific research to test their new theories. That's how they find out if a new idea is a good one, or if the new idea will bring an even better idea. At her lab, Dr Edwards recently learned more about the secrets of why watermelons are good for you! Dr Edwards has known for a long time that watermelons have vitamin C. But recently she learned that watermelons also have lycopene  . It is something that gives tomatoes and watermelons their rosy red colour. What's so special about the lycopene in watermelons? Dr Edwards says that watermelons and tomatoes both have lots of lycopene. It seems that your body can use the lycopene from watermelons more easily than the lycopene from raw   tomatoes. In fact, the lycopene from tomatoes is more easily absorbed   inside your body once they have been cooked. To make full use of tomatoes, we'd better  _  . A) eat them raw B) not peel the C) cook them first D) make them into juice

C
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